This is because of the populations.
Less water would make a large population dehydrate.
Answer: False.
Explanation:
Nitric oxide(NO) is a signalling molecule synthesised by NO synthase which is a a transmitter in the nervous system. Once it is produced, it diffuses out of the cell and act on nearby cells.
NO have a life time of few seconds and it is extremely unstable and highly reactive, it action is restricted.
The blood vessels uses it to signal the surrounding smooth muscle to relax.
Answer:
A hummingbird feeding: Mutualism
Explain Interaction: The hummingbird drinks the nectar from the flower and the hummingbird may help pollinate the flower.
I'm a bit confused by the plants on the floor one.
Plants on a Forest Floor: Competition
Explain Interaction: The plants on the forests floor compete with each other for the same resources. Both may not receive enough of those resources. Note: When I was around Middle School and High-school I was only taught mutualism, commensalism, and parasitism, so let me know if competition is not a choice your teacher gives you to choose from or wasn't taught to you
Flea bites human: Parasitism
Explain Interaction: The flea drinks the persons blood as food and the person is hurt. Flea bites can be itchy and become painful. Fleas may also also carry disease.
Clownfish in Anemone: Mutualism (although I hear some people say commensalism)
Explain Interaction: The anemone provides protection and a place to live for the clownfish. The anemone may eat bits of food left over from the clownfish.
